The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2022
Filed:
Feb. 21, 2020
Nikon Corporation, Tokyo, JP;
Akinori Shirato, Sagamihara, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A liquid crystal exposure apparatus that irradiates a substrate held by a substrate holder which moves along an XY plane with an illumination light via an optical system while the substrate holder moves in the X-axis direction, has; a scale measured based on movement of the substrate holder in the X-axis direction, heads that measure the scale while relatively moving in the X-axis direction with respect to the scale, a plurality of scales arranged at mutually different positions in the X-axis direction measured based on movement of the substrate holder in the Y-axis direction, and a plurality of heads provided for each scale that measures the scales while relatively moving in the Y-axis direction with respect to the scales based on movement of the substrate in the Y-axis direction.